curl --location --request GET 'https://api.cloudflare.com/client/v4/accounts//access/keys'
{
"errors": [],
"messages": [],
"result": {},
"success": true,
"days_until_next_rotation": 1,
"key_rotation_interval_days": 30,
"last_key_rotation_at": "2014-01-01T05:20:00.12345Z"
}